1 | subroutine lwi(nl,netrad,deltapsi,deltap,temp,coolrate) |
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2 | |
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3 | use dimphy |
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4 | use cpdet_phy_mod, only: cpdet |
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5 | implicit none |
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6 | |
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7 | |
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8 | #include "YOMCST.h" |
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9 | #include "timerad.h" |
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10 | |
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11 | CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC |
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12 | C |
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13 | C - lwi - |
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14 | C |
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15 | C PURPOSE: Schema semi - implicite |
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16 | C |
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17 | C |
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18 | CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC |
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19 | |
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20 | |
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21 | c************************************************************************ |
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22 | c |
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23 | c 0. Declarations |
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24 | c ------------ |
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25 | c |
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26 | c------------------------------------------------------------------------- |
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27 | c 0.1 Arguments |
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28 | c --------- |
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29 | c Inputs |
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30 | c....... |
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31 | |
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32 | integer nl |
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33 | real deltapsi(0:nl+1,0:nl+1) ! Dpsi/DT = sum(nu)[ksi DB/DT] |
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34 | real netrad(0:nl) ! radiative budget (W/m**2) |
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35 | real deltap(nl) !epaisseur de la couche en pression (Pa) |
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36 | ! ADAPTATION GCM POUR CP(T) |
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37 | real temp(nl) !temperature de la couche |
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38 | |
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39 | c Outputs |
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40 | c........ |
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41 | |
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42 | real coolrate(nl) |
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43 | |
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44 | c------------------------------------------------------------------------- |
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45 | c 0.2 local arrays |
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46 | c ------------ |
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47 | c |
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48 | real di(nl) |
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49 | . , spec(nl) |
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50 | . , hi(nl) |
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51 | . , bi(nl) |
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52 | |
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53 | real ci(nl) |
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54 | . , ai(nl) |
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55 | |
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56 | real deltat |
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57 | |
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58 | real semi,semit,denom |
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59 | |
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60 | integer i,jl,band |
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61 | |
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62 | c************************************************************************ |
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63 | c |
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64 | c 1. Initialisations |
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65 | c --------------- |
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66 | c |
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67 | c----------------------------------------------------------------------- |
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68 | deltat = dtimerad |
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69 | c print*,'SEMI = ',semi, '(expl:0 semi-implicite:0.5 impl:1)' |
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70 | c semi = 0.5 |
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71 | c semi = 0.5 |
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72 | semi = 1. |
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73 | semit = semi * deltat |
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74 | |
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75 | c print*,'dtimerad,deltat,semit:',dtimerad,deltat,semit |
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76 | |
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77 | c************************************************************************ |
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78 | c |
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79 | c 2. |
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80 | c --------------- |
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81 | c |
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82 | c------------------------------------------------------------------------- |
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83 | c 2.1 Calcul des di |
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84 | c ------------- |
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85 | c |
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86 | |
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87 | do i = 1 , nl-1 |
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88 | spec(i) = |
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89 | . ( deltapsi(i,nl+1) |
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90 | . + deltapsi(i,i+1) |
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91 | . + deltapsi(i,i-1) ) |
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92 | |
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93 | di(i) = 1. + semit * (RG/deltap(i)/cpdet(temp(i))) * spec(i) |
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94 | c print*,i,' di(i)=',di(i) |
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95 | enddo |
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96 | |
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97 | |
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98 | c couche nl |
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99 | c ------------ |
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100 | c , on enleve i,i+1 sinon on a 2 fois le cooling2space |
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101 | |
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102 | spec(nl) = |
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103 | . ( deltapsi(nl,nl+1) |
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104 | . + deltapsi(nl,nl-1) ) |
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105 | |
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106 | di(nl) = 1. + semit * (RG/deltap(nl)/cpdet(temp(nl)))*spec(nl) |
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107 | |
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108 | c------------------------------------------------------------------------- |
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109 | c 2.2 Calcul des hi |
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110 | c ------------- |
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111 | c |
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112 | |
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113 | do i = 1 , nl-1 |
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114 | |
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115 | spec(i) = deltapsi(i+1,i) |
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116 | |
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117 | hi(i) = - semit * (RG/deltap(i)/cpdet(temp(i))) * spec(i) |
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118 | |
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119 | enddo |
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120 | |
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121 | c print*,'hi(i)',hi(i) |
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122 | |
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123 | c------------------------------------------------------------------------- |
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124 | c 2.3 Calcul des bi |
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125 | c ------------- |
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126 | c |
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127 | |
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128 | |
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129 | do i = 2 , nl |
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130 | |
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131 | spec(i) = deltapsi(i-1,i) |
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132 | |
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133 | bi(i) = - semit * (RG/deltap(i)/cpdet(temp(i))) * spec(i) |
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134 | |
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135 | enddo |
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136 | |
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137 | c print*,'bi(i)',bi(i) |
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138 | |
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139 | c couche 1 |
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140 | c -------- |
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141 | c tant qu'on a pas un calcul propre de deltab(0) qui tienne compte de |
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142 | c la discontinuite de temperature au sol , on met b1 = 0 |
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143 | |
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144 | |
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145 | bi(1) = 0 |
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146 | |
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147 | c------------------------------------------------------------------------- |
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148 | c 2.4 |
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149 | c ------------- |
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150 | c |
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151 | |
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152 | c couche nl |
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153 | c ------------ |
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154 | |
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155 | c ci(nl) = ((RG/CP) * netrad(nl) / deltap(nl)) |
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156 | c . / di(nl) |
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157 | ci(nl) = netrad(nl) *RG/cpdet(temp(nl)) / deltap(nl) |
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158 | |
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159 | ai(nl) = - bi(nl) / di(nl) |
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160 | |
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161 | do i = nl-1 , 1 , -1 |
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162 | denom = di(i) + hi(i) * ai(i+1) |
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163 | |
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164 | c ci(i) = ( (RG/CP) * netrad(i) / deltap(i) |
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165 | c . - hi(i) * ci(i+1) ) / denom |
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166 | ci(i) = netrad(i) *RG/cpdet(temp(i)) / deltap(i) |
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167 | |
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168 | ai(i) = -bi(i) / denom |
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169 | enddo |
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170 | |
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171 | c------------------------------------------------------------------------- |
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172 | c 2.5 |
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173 | c ------------- |
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174 | c |
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175 | |
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176 | coolrate(1) = ci(1) |
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177 | |
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178 | do i = 2 , nl |
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179 | coolrate(i) = ci(i) + ai(i) * coolrate(i-1) |
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180 | c print*,i,' coolrate(i)=',coolrate(i) |
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181 | enddo |
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182 | |
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183 | c------------------------------------------------------------------------- |
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184 | |
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185 | RETURN |
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186 | END |
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